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Finding the Fourth Proportional to 157,003.91, 216,663.35 and 85,382.39

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Solution

The fourth proportional to 157,003.91, 216,663.35 and 85,382.39 is: 117,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,003.91 : 216,663.35 = 85,382.39 : x
  2. Step 2: Convert to fraction form
    157,003.91/216,663.35 = 85,382.39/x
  3. Step 3: Cross multiply
    157,003.91x = 216,663.35 × 85,382.39
  4. Step 4: Simplify right side
    157,003.91x = 18,499,234,648.41
  5. Step 5: Solve for x
    x = 18,499,234,648.41/157,003.91
  6. Step 6: Final answer
    x = 117,826.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.